Variables & Expressions

Front

What are the three components of an algebraic expression?

Back

A number (constant), a variable, and an operation.

Front

In the expression 6 + n, what is the constant?

Back

6

Front

Evaluate the expression 10 + b if b = 4.

Back

14

Front

Evaluate the expression 4b - 5a if a = 3 and b = 4.

Back

1

Front

Evaluate the expression ab ÷ 3 if a = 3 and b = 4.

Back

4

Front

What is a variable in mathematics?

Back

A symbol (often a letter) that represents an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of the expression by substituting the variables with their values.

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value, while a variable can change.

Front

What is an algebraic expression?

Back

A mathematical phrase that can include numbers, variables, and operations.

Front

What is the purpose of using variables in expressions?

Back

To represent unknown values and to generalize mathematical relationships.